There are differences in performance and implementation technology that can affect performance and such, but normal Linux administration techniques should alway

There are differences in performance and implementation technology that can affect performance and such, but normal Linux administration techniques should always work. IDK off the top of my head, but OpenVZ guests I think need to run the same kernel version as the host, so that may play into it. KVM and Xen I belive don't have this drawback. OpenVZ doesn't give you dedicated access to resources i.e. it will allow other guests to use what you aren't using which affects performance. KVM and Xen I believe reserve ram and CPUs.